EP3234079A2 - Lubrifiants haute température - Google Patents

Lubrifiants haute température

Info

Publication number
EP3234079A2
EP3234079A2 EP15801328.4A EP15801328A EP3234079A2 EP 3234079 A2 EP3234079 A2 EP 3234079A2 EP 15801328 A EP15801328 A EP 15801328A EP 3234079 A2 EP3234079 A2 EP 3234079A2
Authority
EP
European Patent Office
Prior art keywords
oil
group
temperature
mixture
hydrogenated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP15801328.4A
Other languages
German (de)
English (en)
Other versions
EP3234079B1 (fr
Inventor
Karl EGERSDÖRFER
Thomas Kilthau
Stefan Grundei
Stefan Seemeyer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Klueber Lubrication Muenchen GmbH and Co KG
Original Assignee
Klueber Lubrication Muenchen SE and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Klueber Lubrication Muenchen SE and Co KG filed Critical Klueber Lubrication Muenchen SE and Co KG
Priority to DK18000076.2T priority Critical patent/DK3372660T3/da
Priority to PL18000076T priority patent/PL3372660T3/pl
Priority to EP18000076.2A priority patent/EP3372660B1/fr
Priority to EP18000075.4A priority patent/EP3372659B1/fr
Priority to PL18000075T priority patent/PL3372659T3/pl
Publication of EP3234079A2 publication Critical patent/EP3234079A2/fr
Application granted granted Critical
Publication of EP3234079B1 publication Critical patent/EP3234079B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M111/00—Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential
    • C10M111/04—Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential at least one of them being a macromolecular organic compound
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
    • C10M105/02—Well-defined hydrocarbons
    • C10M105/06—Well-defined hydrocarbons aromatic
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    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
    • C10M105/08—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
    • C10M105/32—Esters
    • C10M105/36—Esters of polycarboxylic acids
    • C—CHEMISTRY; METALLURGY
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    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
    • C10M107/02—Hydrocarbon polymers; Hydrocarbon polymers modified by oxidation
    • C10M107/08—Hydrocarbon polymers; Hydrocarbon polymers modified by oxidation containing butene
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M109/00—Lubricating compositions characterised by the base-material being a compound of unknown or incompletely defined constitution
    • C—CHEMISTRY; METALLURGY
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    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M111/00—Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential
    • C10M111/06—Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential at least one of them being a compound of the type covered by group C10M109/00
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    • C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
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    • C10M169/04—Mixtures of base-materials and additives
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    • C10M169/04—Mixtures of base-materials and additives
    • C10M169/044—Mixtures of base-materials and additives the additives being a mixture of non-macromolecular and macromolecular compounds
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    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
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    • C10M2201/062—Oxides; Hydroxides; Carbonates or bicarbonates
    • C10M2201/0626—Oxides; Hydroxides; Carbonates or bicarbonates used as thickening agents
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    • C10M2201/103—Clays; Mica; Zeolites
    • C10M2201/1036—Clays; Mica; Zeolites used as thickening agents
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    • C10M2201/1056—Silica used as thickening agents
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    • C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
    • C10M2203/06—Well-defined aromatic compounds
    • C10M2203/065—Well-defined aromatic compounds used as base material
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    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
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    • C10M2205/0265—Butene used as base material
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    • C10M2207/127—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids polycarboxylic
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    • C10M2207/301—Complex esters, i.e. compounds containing at leasst three esterified carboxyl groups and derived from the combination of at least three different types of the following five types of compounds: monohydroxyl compounds, polyhydroxy xompounds, monocarboxylic acids, polycarboxylic acids or hydroxy carboxylic acids used as base material
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    • C10N2040/38—Conveyors or chain belts
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2050/00—Form in which the lubricant is applied to the material being lubricated
    • C10N2050/10—Form in which the lubricant is applied to the material being lubricated semi-solid; greasy
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2060/00—Chemical after-treatment of the constituents of the lubricating composition
    • C10N2060/02—Reduction, e.g. hydrogenation

Definitions

  • the invention relates to high temperature lubricants, especially oils and fats based on an aromatic ester, such as a trimellitic acid ester and mixtures of various trimellitic acid esters, alkylaromatics, estolides and a fully hydrogenated or hydrogenated polyisobutylene or a mixture thereof, a thickener.
  • the invention further relates to the use of this high temperature grease for continuous use temperatures of up to 250 ° C.
  • the lubricants must fulfill a variety of other tasks: they must cool, reduce friction, wear and power transmission, protect against corrosion and at the same time have a sealing effect.
  • the high temperature greases should be quiet.
  • Synthetic esters are often used as base oils for high-temperature applications since they have very good oxidative, hydrolytic and thermal stability.
  • the lubricants In order to meet the diverse requirements of high-temperature applications, the lubricants must have, among other things, high stability, low friction coefficients and high wear resistance. In order to ensure uniform lubrication even at high temperatures, a liquid lubricant film must remain between metal parts during the entire processing process. Therefore, the lubricant must evaporate only slightly at the maximum processing temperature, form little residue and form as few cracking residues as possible. High temperatures often occur when used in chains, rolling and plain bearings, in vehicle technology, materials handling, mechanical engineering, office technology and in industrial equipment and machinery, but also in the fields of home appliances and consumer electronics. In rolling and plain bearings, lubricants ensure that a separating, load-transmitting lubricating film is built up between sliding or rolling parts.
  • the lubricants must therefore meet high requirements. These include extreme Operating conditions such as very high or very low speeds, high temperatures due to high speeds or foreign heating, very low temperatures, for example, in camps that operate in cold environments or that occur in aerospace applications. Likewise, the modern lubricants under so-called clean room conditions should be used to avoid the pollution of the room by the abrasion or the consumption of lubricants. In addition, when using the modern lubricants should be avoided that they evaporate and thus "leach", ie that they become solid after a short time application and no longer show any lubricating effect.
  • lubricants On lubricants special requirements are placed in the application to the effect that the running surfaces of the bearings are not attacked by low friction, run the storage areas quiet, and long running times are achieved without relubrication required. Also, lubricants must withstand the effects of force such as centrifugal force, gravity and vibration.
  • a lubricating grease can stimulate vibrations in the rolling bearing during circulation participation (rolling over, rolling), which are "lubricant noises" in the frequency bands medium 300 to 1,800 Hz and high 1,800 to 10,000 Hz, compared to the bearing noise in the frequency band low at 50 to 300 Hz.
  • the lubricant noise is superimposed by the noise peaks that occur during the rolling over of hard particles by the rolling elements in the form of shock pulses on the bearing ring.
  • the noise behavior is evaluated according to the SKF BeQuiet + method.
  • the fat noise class is classified as follows:
  • GNX slightly worse than GN1 (very bad noise behavior)
  • the object of the present invention is to provide a high temperature oil and high temperature grease which meets the above requirements.
  • the Vercrackungs Wegwarnote formed should not lend, but be redissolvable by fresh fat.
  • the high-temperature lubricant should have a good hydrolytic stability, corrosion and wear resistant, as well as have a good oxidation resistance and adapted to the requirement good low temperature behavior. This is defined by the pour point for lubricating oils and by the flow pressure at low temperatures for lubricating greases.
  • the high-temperature grease should show good noise behavior, have long maturities and cause substantially no signs of wear of the devices.
  • a high-temperature oil comprising the following components: a) 93.9 to 45 wt .-% of at least one oil selected from the group consisting of alkylaromatics, preferably an aliphatic substituted naphthalene, estolides, trimellitic esters, or a mixture of different Trimellitic esters in which the alcohol group of the ester is a linear or branched alkyl group having 8 to 16 carbon atoms,
  • a high-temperature fat comprising the following components: a) 91, 9 to 25 wt .-% of at least one oil selected from the group consisting of alkylaromatics, preferably an aliphatic substituted naphthalene, estolides, trimellitic esters, or a mixture of different Trimellitic acid esters in which the alcohol group of the ester is a linear or branched alkyl group having 8 to 16 carbon atoms,
  • a polymer namely a hydrogenated or fully hydrogenated polyisobutylene or a mixture of hydrogenated or fully hydrogenated polyisobutylene;
  • additives individually or in combination, selected from the group consisting of corrosion protection additives, antioxidants, anti-wear additives, UV stabilizers, inorganic or organic solid lubricants and
  • the high-temperature oil according to the invention and the high-temperature fat according to the invention are distinguished by outstanding performance.
  • the high-temperature oil or high-temperature grease according to the invention exhibits high thermal stability combined with a long service life and good lubricating properties.
  • the high-temperature oil according to the invention comprises as ester compound an estolide or a mixture of different estolides or an aliphatically substituted naphthalene or a mixture of different aliphatically substituted naphthalenes.
  • estolides are ester compounds which are acid or enzymatically catalyzed from fatty acids, preferably oleic acid or dicarboxylic acids, or a mixture of both.
  • the acid function attacks the double bond of an adjacent oil fatty acid molecule, resulting in a higher molecular weight ester compound.
  • the terminal acid group is then usually esterified with an alcohol, preferably 2-ethyl-hexanol and then the remaining double bonds are hydrogenated or esterified with carboxylic acid, for example acetic acid.
  • alcohols such as isoamyl alcohol or Guebert alcohols are also conceivable for the esterification of the terminal acid group.
  • estolides may also be obtained via condensation of hydroxycarboxylic acids or condensation of hydroxycarboxylic acids with fatty acids, e.g. Oleic acid or stearic acid derivatives are synthesized.
  • the chain length of the hydroxycarboxylic acids or unsaturated acids used can range from C6 to C54.
  • the acids may contain other functional groups e.g. Amines, ethers, containing sulfur-containing groups.
  • an esterification with alpha-olefins or ß-Farnesen is conceivable.
  • the high temperature oil of the invention may contain a second oil comprising an alkylaromatic.
  • an aromatic is used.
  • an aromatic means a monocyclic, bicyclic or tricyclic ring system having four to fifteen carbon atoms, the monocyclic ring system being aromatic or at least one of the rings being aromatic in a bi- or tricylic ring system.
  • Preference is given to using a bicyclic ring system which preferably has 10 carbon atoms.
  • the aromatic is substituted with one or more aliphatic substituents.
  • Particularly preferred is the aromatic having one to four aliphatic substituents and in particular having two or three aliphatic substituents substituted.
  • An alkyl group according to the invention is a saturated aliphatic hydrocarbon group having 1 to 30, preferably 3 to 20, more preferably 4 to 17 and especially 6 to 15 carbon atoms.
  • An alkyl group may be linear or branched and is optionally substituted with one or more of the abovementioned substituents.
  • the lubricating oil particularly preferably contains at least one aliphatically substituted naphthalene, in particular at least one alkyl-substituted naphthalene.
  • the naphthalene is substituted with one to four aliphatic substituents and in particular with two or three aliphatic substituents.
  • Practical experiments have shown that mixtures of differently substituted naphthalenes, ie mixtures of naphthalenes, which have a different degree of substitution and different aliphatic substituents, are particularly suitable.
  • the properties, such as the viscosity, of the high-temperature lubricant can be set particularly easily.
  • Aliphatic-substituted naphthalenes are also characterized by excellent dissolution properties and high thermo-oxidative stability.
  • the viscosity, measured at 40 ° C, of the aliphatically substituted naphthalene is preferably 30 to 600 mm 2 / s, more preferably 30 to 300 m / s.
  • the high temperature oil of the invention further comprises a polyisobutylene.
  • a polyisobutylene By suitable choice of the polyisobutylene, in particular with regard to the degree of hydrogenation and molecular weight, the properties of the oil according to the invention, for example its kinematic viscosity and, above all, its formation of residues, can be influenced in a desired manner.
  • the polyisobutylene can be used in hydrogenated or fully hydrogenated form, as well as a mixture of hydrogenated and fully hydrogenated polyisobutylene can be used. Fully hydrogenated polyisobutylenes are preferably used.
  • the Polyisobutylene is present in an amount of 6 to 45 wt .-% in the composition, preferably 10 to 45 wt .-%, in particular 5 to 45 wt .-% are used.
  • the high-temperature oil according to the invention further comprises from 0.1 to 10 wt .-%, additives which are used individually or in combination and from the group consisting of anti-corrosion additives, antioxidants, anti-wear additives, UV stabilizers, inorganic or organic solid lubricants selected.
  • the high-temperature fat of the present invention comprises as an ester compound a trimellitic acid ester or a mixture of various trimellitic acid esters, wherein the alcoholic group of the ester is a linear or branched alkyl group having 8 to 16 carbon atoms.
  • the properties of the lubricant for example, the viscosity, the viscosity-temperature behavior, the oxidation resistance and residue behavior can be adjusted.
  • the high temperature grease of the invention may contain a second oil comprising an alkyl aromatic.
  • an aromatic is used.
  • an aromatic means a monocyclic, bicyclic or tricyclic ring system having four to fifteen carbon atoms, the monocyclic ring system being aromatic or at least one of the rings being aromatic in a bi- or tricylic ring system.
  • Preference is given to using a bicyclic ring system which preferably has 10 carbon atoms.
  • the aromatic is substituted with one or more aliphatic substituents.
  • the aromatic is particularly preferably substituted by one to four aliphatic substituents and in particular by two or three aliphatic substituents.
  • An alkyl group according to the invention is a saturated aliphatic hydrocarbon group having 1 to 30, preferably 3 to 20, more preferably 4 g to 17 and especially 6 to 15 carbon atoms.
  • An alkyl group may be linear or branched and is optionally substituted with one or more of the abovementioned substituents.
  • the lubricating grease particularly preferably contains at least one aliphatically substituted naphthalene, in particular at least one alkyl-substituted naphthalene.
  • the naphthalene is substituted with one to four aliphatic substituents and in particular with two or three aliphatic substituents.
  • estolides can also be used.
  • Preferred viscosities, measured at 40 ° C are between 30 and 500 mm 2 / sec. Viscosities of 30 to 140 mm 2 / sec are particularly preferred.
  • the high-temperature grease according to the invention further comprises a polyisobutylene.
  • a polyisobutylene By suitable choice of the polyisobutylene, in particular with regard to the degree of hydrogenation and molecular weight, the properties of the fat according to the invention, for example its kinematic viscosity, can be influenced in a desired manner.
  • the polyisobutylene can be used in hydrogenated or fully hydrogenated form, as well as a mixture of hydrogenated and fully hydrogenated polyisobutylene can be used. Fully hydrogenated polyisobutylenes are preferably used.
  • the polyisobutylene is in an amount of 6 to 45 wt .-% in the composition, preferably 10 to 45 wt .-%, in particular 15 to 45 wt .-% are used.
  • the polyisobutylene has a number average molecular weight of 115 to 0.000 g / mol, preferably from 160 to 5000 g / mol.
  • the high-temperature fat according to the invention further comprises from 0.1 to 10 wt .-%, additives which are used individually or in combination and from the group consisting of anti-corrosion additives, antioxidants, anti-wear additives, UV stabilizers, inorganic or organic solid lubricants selected.
  • the high-temperature fat according to the invention also comprises a thickener.
  • the thickener in the high-temperature grease of the lubricant composition according to the invention is either a reaction product of a diisocyanate, preferably 2,4-diisocyanatotoluene, 2,6-diisocyanatotoluene, 4,4'-diisocyanatodiphenylmethane, 2,4'-diisocyanatophenylmethane, 4,4'-diisocyanatotoluene.
  • Al complex soaps is selected from among Al complex soaps, metal soaps of the first and second main group elements of the perriodic system, metal complex soaps of elements of the first and second main group of the periodic table, bentonites, sulfonates, silicates, aerosil, polyimides or PTFE or a mixture of the foregoing thickener.
  • the additives mentioned below have particularly good physical and chemical properties:
  • the addition of antioxidants can reduce or even prevent the oxidation of the oil or fat according to the invention, in particular when it is used. Oxidation can lead to undesirable free radicals and, as a result, decomposition reactions of the high-temperature lubricant can occur.
  • the addition of antioxidants stabilizes the high temperature grease.
  • Antioxidants which are particularly suitable according to the invention are the following compounds:
  • Styrenated diphenylamines diaromatic amines, phenolic resins, thiophenol resins, phosphites, butylated hydroxytoluene, butylated hydroxyanisole, phenyl-alphanaphthylamine, phenyl-beta-naphthylamine, octylated / butylated diphenylamine, di-alpha-tocopherol, di-tert-butyl-phenyl, Benzenepropanoic acid, sulfur-containing phenolic compounds, phenolic compounds and mixtures of these components.
  • the high temperature grease may contain corrosion inhibiting additives, metal deactivators or ion complexing agents.
  • corrosion inhibiting additives include triazoles, imidazolines, N-methylglycine (sarcosine), benzotriazole derivatives, N, N-bis (2-ethylhexyl) -ar-methyl-1 H-benzotriazole-1-methanamine; N-methyl-N (1 -oxo-9-octadecenyl) glycine, mixture of phosphoric acid and mono- and Diisooctylester reacted with (C11-14) - alkylamines, mixture of phosphoric acid and mono- and Diisooctylester reacted with tert-alkylamine and primary (Ci2-14) amines, dodecanoic acid, triphenyl phosphorothionate and amine phosphates.
  • IRGAMET ® 39 IRGACOR ® DSS G, amine O; Sarkosyl O ® (Ciba), COBRATEC ® 122, CUVAN ® 303, VANLUBE ® 9123, CI-426, CI-426EP, Cl- 429 and CI-498th
  • anti-wear additives are amines, amine phosphates, phosphates, thiophosphates, phosphorothionates and mixtures of these components.
  • anti-wear additives include IRGALUBE ® TPPT, IRGALUBE ® 232, IRGALUBE ® 349, IRGALUBE ® 211 and ADDITIN ® RC3760 Liq 3960, FIRC-shun ® FG 1505 and FG 1506 NA-LUBE ® KR-015FG, LUBEBOND ®, FLUORO ® FG, SYNALOX ® 40-D, ACHESON FGA ® 1820 and ACHESON ® FGA 1810th
  • the grease may include solid lubricants such as PTFE, BN, pyrophosphate, Zn oxide, Mg oxide, pyrophosphates, thiosulfates, Mg carbonate, Ca carbonate, Ca stearate, Zn s
  • the high temperature oil or fat according to the invention has up to a temperature of 250 ° C no or negligible decomposition phenomena. By this is meant that less than 10% of the lubricant decomposes.
  • the high-temperature oil or fat according to the invention may contain, as another base oil, an oil, preferably selected from the group consisting of mineral oil, aliphatic carboxylic acid and dicarboxylic esters, fatty acid triglycerides, pyromellitic esters, diphenyl ethers, phloroglucinic esters and / or poly-alpha-olefins, alpha-olefin Contain copolymers.
  • an oil preferably selected from the group consisting of mineral oil, aliphatic carboxylic acid and dicarboxylic esters, fatty acid triglycerides, pyromellitic esters, diphenyl ethers, phloroglucinic esters and / or poly-alpha-olefins, alpha-olefin Contain copolymers.
  • the high temperature oil or fat according to the invention contains an estolide, preferably the main constituents of the estolide being obtained by chemical or enzymatic processes starting from native oils from the group of sunflower oil, rapeseed oil, castor oil, linseed oil, corn oil, diest oil, soybean oil, linseed oil Practical tests have shown that the high-temperature oil or fat according to the invention, due to its physical and chemical properties, is outstandingly suitable for use in chains, roller bearings and slide bearings , in the vehicle technology, the conveyor technology, the mechanical engineering, the office technology as well as in industrial plants and machines, in addition, in the ranges of household machines and the consumer electronics. Thanks to its good temperature resistance it can also be used at high operating temperatures up to 260 ° C, preferably be used at temperatures of 150 to 250 ° C.
  • the invention further relates to a process for the preparation of the above-described High temperature oils or fats, in which the base oils and the additives are mixed together.
  • Estolides or aliphatically substituted naphthalenes are initially charged in a stirred tank. At 100 ° C, the polyisobutylene and optionally a further oil is added with stirring. Subsequently, the mixture is stirred for 1 h to obtain a homogeneous mixture. The anti-wear agents and the antioxidant are added to the kettle at 60 ° C with stirring. After about 1 hour, the finished oil can be filled into the containers provided.
  • the base oil is placed in a stirred tank. At 100 ° C, the polyisobutylene and optionally a further oil and the thickener is added with stirring. lg
  • the thickener is formed by an in situ reaction of the reactants used in the base oil. Subsequently, the mixture is heated to 150 ° C to 210 ° C, stirred for several hours and cooled again. In the cooling process at about 60 ° C, the necessary anti-wear agents, antioxidants and corrosion inhibitors are added. A homogeneous mixture of the fat is obtained by the final homogenization step on roller, colloid mill or Gaulin.
  • compositions of the high temperature fats are shown in Table 6.
  • the thickeners used in Examples 3 to 8 are:
  • Example 3 LiOH, 12-hydroxystearic acid, azelaic acid,
  • Example 4 LiOH, 12-hydroxystearic acid, azelaic acid,
  • Example 5 LiOH, 12-hydroxystearic acid, azelaic acid,
  • Example 6 Di-urea; Methylene diphenyl diisocyanate (MDI), octylamine,
  • Example 7 Di-urea; MDI, octylamine, oleylamine
  • Example 8 Di-urea; MDI, octylamine, oleylamine The general characteristics of the fat patterns 3 to 8 are shown in Table 7.
  • a decisive influence on the lubricating effect of a grease has the oil separation. It is important to ensure that on the one hand, the oil separation is not too high and the oil runs out of the warehouse and thus the Tribo system is no longer available and on the other hand no oil separation is observed and the lubricating effect of the grease is lost. Ideally, the oil separation should be between 0.5 and 8% by weight in order to form an optimum lubricating film in the bearing.
  • the greases of the examples were subjected to a FE 9 rolling bearing test according to DIN 51 821 in which the service life of the greases investigated is determined and the upper service temperature of greases in roller bearings at medium speeds and average axial loads is determined. lg
  • Table 8 shows that the runtimes through the use of PIB in combination with various base oils have long run times and are thus suitable for high application temperatures in continuous operation.
  • the noise behavior of the various fat formulations is very positively influenced by the use of fully hydrogenated polyisobutylene. With the exception of Example 6, good to very good noise properties can be achieved.
  • Example 3 The property of the fat of Example 3 using fully hydrogenated PIB was now compared to a fat (Comparative Example 3) containing a PIB still having double bonds, that is, a non-fully hydrogenated PIB.
  • Example 3 grease exhibits a doubled run time in the FE9 test, has lower evaporation losses and significantly better noise performance.
  • Table 11 shows the results. Table 1 1
  • Table 1 shows that there are marked differences in the use of fully hydrogenated and partially hydrogenated PIB.
  • the dissolution of the residue based on the partially hydrogenated PIV is no longer possible, while the oil with the fully hydrogenated PIB has very good Wiederananseigenschaften.

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  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Lubricants (AREA)

Abstract

La présente invention concerne un lubrifiant haute température à compatibilité alimentaire, en particulier une huile haute température et une graisse haute température contenant les constituants suivants : a) au moins une huile choisie parmi un ester d'acide trimellitique ou un mélange d'esters d'acide trimellitique, des composés aromatiques d'alkyle, de préférence une naphtaline à substitution aliphatique, ou des estolides ; b) un polyisobutylène hydrogéné ou totalement hydrogéné ou un mélange de polyisobutylènes hydrogénés et totalement hydrogénés et c) des additifs seuls ou en combinaison. Pour la graisse haute température, un épaississant est ajouté.
EP15801328.4A 2014-12-17 2015-11-19 Lubrifiants haute température Active EP3234079B1 (fr)

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DK18000076.2T DK3372660T3 (da) 2014-12-17 2015-11-19 Højtemperatur-smøremidler
PL18000076T PL3372660T3 (pl) 2014-12-17 2015-11-19 Wysokotemperaturowe środki smarowe
EP18000076.2A EP3372660B1 (fr) 2014-12-17 2015-11-19 Lubrifiants haute température
EP18000075.4A EP3372659B1 (fr) 2014-12-17 2015-11-19 Lubrifiants haute température
PL18000075T PL3372659T3 (pl) 2014-12-17 2015-11-19 Wysokotemperaturowe środki smarowe

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DE102014018718.7A DE102014018718A1 (de) 2014-12-17 2014-12-17 Hochtemperaturschmierstoffe
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JP6448801B2 (ja) 2019-01-09
KR20170085089A (ko) 2017-07-21
WO2016096074A3 (fr) 2016-09-01
PL3372659T3 (pl) 2021-10-25
MX388729B (es) 2025-03-20
JP2017538838A (ja) 2017-12-28
EP3372660B1 (fr) 2021-09-22
CN107406791A (zh) 2017-11-28
EP3234079B1 (fr) 2021-07-07
CN107406791B (zh) 2021-01-01
KR102019083B1 (ko) 2019-11-04
PL3372660T3 (pl) 2022-01-31
DE102014018718A1 (de) 2016-06-23
WO2016096074A2 (fr) 2016-06-23
BR112017012528A2 (pt) 2018-03-13
SI3372659T1 (sl) 2021-08-31
ES2893843T3 (es) 2022-02-10
EP3372660A1 (fr) 2018-09-12
EP3372659A1 (fr) 2018-09-12
EP3372659B1 (fr) 2021-06-16
DK3372660T3 (da) 2021-12-20
MX2021012796A (es) 2021-11-12
MX2017007674A (es) 2018-01-23
HUE057256T2 (hu) 2022-05-28
US20170327760A1 (en) 2017-11-16

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